One problem related to car stall has been reported for the 2018 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 GMC Sierra 1500 based on all problems reported for the 2018 Sierra 1500.
After long periods of running and idle, vehicle stalls out has a hard time restarting. Gas paddle being press helps sometimes. Check code p2635 plus others (random secondary codes), come on. This has taken place in az where the ambient air temperature typically is over 100�. Vehicle has been to gm dealer who says its vaporizing the fuel in the lines. TSB pip5507b dose not include 2018, however the design hasn't changed. Conditions; long idle, hot weather, low speeds under 25 mph or idle. Location; az sonrona dessert, off-road, jobsite, city streets.